Detailed Description

Date and Time related converters.

Definition in file datetime.hpp.

#include <chrono>
#include <cstdint>
#include <optional>
#include <stdexcept>
#include <string>
#include <cctz/civil_time.h>

This graph shows which files directly or indirectly include this file:

Classes
class	utils::datetime::DateParseError
	Date/time parsing error. More...

class	utils::datetime::TimezoneLookupError
	Timezone information lookup error. More...

class	utils::datetime::SteadyClock

Namespaces
namespace	utils
	Utilities.

namespace	utils::datetime
	Date and time utilities.

Typedefs
using	utils::datetime::timepair_t = std::pair<std::uint8_t, std::uint8_t>

Functions
std::chrono::system_clock::time_point	utils::datetime::Now () noexcept
	std::chrono::system_clock::now() that could be mocked

std::chrono::system_clock::time_point	utils::datetime::Epoch () noexcept
	Returns std::chrono::system_clock::time_point from the start of the epoch.

std::chrono::steady_clock::time_point	utils::datetime::SteadyNow () noexcept
	std::chrono::steady_clock::now() that could be mocked

bool	utils::datetime::IsTimeBetween (int hour, int min, int hour_from, int min_from, int hour_to, int min_to, bool include_time_to=false) noexcept
	Returns true if the time is in range; works over midnight too.

std::string	utils::datetime::Timestring (std::time_t timestamp, const std::string &timezone=kDefaultTimezone, const std::string &format=kDefaultFormat)
	Returns time in a string of specified format.

std::string	utils::datetime::LocalTimezoneTimestring (std::time_t timestamp, const std::string &format=kDefaultFormat)
	Returns time in a string of specified format.

std::string	utils::datetime::Timestring (std::chrono::system_clock::time_point tp, const std::string &timezone=kDefaultTimezone, const std::string &format=kDefaultFormat)
	Returns time in a string of specified format.

std::string	utils::datetime::LocalTimezoneTimestring (std::chrono::system_clock::time_point tp, const std::string &format=kDefaultFormat)
	Returns time in a string of specified format.

std::chrono::system_clock::time_point	utils::datetime::Stringtime (const std::string &timestring, const std::string &timezone=kDefaultTimezone, const std::string &format=kDefaultFormat)
	Extracts time point from a string of a specified format.

std::chrono::system_clock::time_point	utils::datetime::LocalTimezoneStringtime (const std::string &timestring, const std::string &format=kDefaultFormat)
	Extracts time point from a string of a specified format.

std::chrono::system_clock::time_point	utils::datetime::GuessStringtime (const std::string &timestamp, const std::string &timezone)
	Extracts time point from a string, guessing the format.

std::chrono::system_clock::time_point	utils::datetime::GuessLocalTimezoneStringtime (const std::string &timestamp)
	Extracts time point from a string, guessing the format.

std::optional< std::chrono::system_clock::time_point >	utils::datetime::OptionalStringtime (const std::string &timestring, const std::string &timezone=kDefaultTimezone, const std::string &format=kDefaultFormat)
	Returns optional time in a string of specified format.

std::time_t	utils::datetime::Timestamp (std::chrono::system_clock::time_point tp) noexcept
	Converts time point to std::time_t.

std::time_t	utils::datetime::Timestamp () noexcept
	Returned current time as std::time_t; could be mocked.

std::uint32_t	utils::datetime::ParseDayTime (const std::string &str)
	Parse day time in hh:mm[:ss] format.

cctz::civil_second	utils::datetime::Localize (const std::chrono::system_clock::time_point &tp, const std::string &timezone)
	Converts absolute time in std::chrono::system_clock::time_point to a civil time of a particular timezone.

cctz::civil_second	utils::datetime::LocalTimezoneLocalize (const std::chrono::system_clock::time_point &tp)
	Converts absolute time in std::chrono::system_clock::time_point to a civil time of a local timezone.

std::time_t	utils::datetime::Unlocalize (const cctz::civil_second &local_tp, const std::string &timezone)
	Converts a civil time in a specified timezone into an absolute time.

std::time_t	utils::datetime::LocalTimezoneUnlocalize (const cctz::civil_second &local_tp)
	Converts a civil time in a local timezone into an absolute time.

std::string	utils::datetime::TimestampToString (std::time_t timestamp)
	Returns string with time in ISO8601 format "YYYY-MM-DDTHH:MM:SS+0000".

std::int64_t	utils::datetime::TimePointToTicks (const std::chrono::system_clock::time_point &tp) noexcept
	Convert time_point to DotNet ticks.

std::chrono::system_clock::time_point	utils::datetime::TicksToTimePoint (std::int64_t ticks) noexcept
	Convert DotNet ticks to a time point.

template<class Duration , class Clock >
double	utils::datetime::CalcTimeDiff (const std::chrono::time_point< Clock > &a, const std::chrono::time_point< Clock > &b)
	Compute (a - b) with a specified duration.

Variables
const std::string	utils::datetime::kRfc3339Format = "%Y-%m-%dT%H:%M:%E*S%Ez"

const std::string	utils::datetime::kTaximeterFormat = "%Y-%m-%dT%H:%M:%E6SZ"

constexpr std::time_t	utils::datetime::kStartOfTheEpoch = 0

const std::string	utils::datetime::kDefaultDriverTimezone = "Europe/Moscow"

const std::string	utils::datetime::kDefaultTimezone = "UTC"

const std::string	utils::datetime::kDefaultFormat = "%Y-%m-%dT%H:%M:%E*S%z"

const std::string	utils::datetime::kIsoFormat = "%Y-%m-%dT%H:%M:%SZ"

Detailed Description

Classes

Namespaces

Typedefs

Functions

Variables